pbeoival



UNITED STATES PATENT OFFICE.

GEO. G. PEROIVAL, M. D., OF BROOKLYN, NEW YORK.

INKSTAND AND CALENDAR COMBINED.

Specification forming part'of Letters Patent No. 56,603, dated July 24, 1866; antedated July 19, 1866.

To all whom t may concern:

Be it known that'l, GEORGE Gr. PERCIVAL, M. D., of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Inkstand and Calendar Combined; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a side elevation of this invention. Fig. 2 is a vertical central section of the same, the line a: fr, Fig. l, indicating the plane of section. Figs. 3 and 4L are perspective views ot modilications of the same.

Similar letters of reference indicate like parts. j

This invention consists in a perpetual calendar attached to an inkstand and constructed by placing the names and number of days in the months on the externalsurface ofthe inkstand, and the names of the days of the week on a movable annular slip, in such a manner that when the ring containing the names of the week-days is properly adjusted the figures corresponding to all the Sundays in the year will be under the word .Sunday,77 the figures corresponding to all the Mondays under the word Monday,"7 and so forth, and by turning said ring the calendar can be readily adjusted to any desired year.

A represents an inkstand, which consists of a glass bottle for containing the ink embedded in plaster-of1-iarisand surrounded by a tin case. Near the upper edge'of this case is a brass ring7 B, having the names of the days of' the week engraved on it.

The case is divided on its external surface by wide vertical lines :into seven (7) equal spaces, a, and on the left of these spaces are the names of the months in their proper order, and opposite them an arithmetical progression with the common difference 7, com-l mencing with l in one division, 2 in the next, 3 in the next, and so on. The progression in no case runs higher than the number of days in the month. On the wide vertical lines which divide the spaces a may be marked the numbers of the years corresponding to the fig ures in the spaces.

In order to adjust the calendar the projection b between the words Saturday and Sunday on the brass ring has to be placed over the number of the year found in the vertical divisions between the spaces a.

To nd the day of the month, find the name of the day of the Week on the brass ring, follow down till you come to the proper month, and opposite this month are four or live numbers. One of them is the proper one, but which it is must be decided by collateral circumstances. After being once adjusted it will require readj ustment every 1st day of J an uary and every 29th day vof February. To readjust I simply slide the brass ring back one division.

rlhe ring containing the names of the weekdays may be placed ou the top of the inkstand, as shown in Fig. 3, or at its bottom, as shown in Fig. 4.

I claim as new and desire to secure by Letters Patent- The calendar constructed and arranged as herein specied, in thedescribed combination with the inkstand A.

GEO. G. PEROIVAL, M. D.

Witnesses:

W. B. MALONEY, M. D., M. B. MossEE, M. D. 

